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Semináře

Jonathan Leiner: Frustrated Magnetism in Mott Insulating V2O3
Begin: 21.04.2021, 14:10
Location: ZOOM Meeting ID: 958 0426 7376

Adam Dubroka: Study of photo-induced insulator-to-metal transition and excited states in LaCoO3 using femtosecond pump-probe ellipsometry
Begin: 22.04.2021, 14:00
Location: Zoom Meeting ID: 967 5516 9898

Dalibor Repček: Magnetoelectric behaviour of EuTiO3 ceramics
Begin: 28.04.2021, 14:10
Location: ZOOM Meeting ID: 958 0426 7376

 
Title: Gaël Bastien: From triangular lattice antiferromagnet to frustrated lattice of magnetic and electric dipoles
Number: 24/21
Status: Closing date exceeded
Begin: Čtvrtek, 08.04. 2021, 13:00
Tutor: Karel Carva
Location: ZOOM Meeting ID: 96221555849

Thursday 8 April 2021 at 13:00 in Online webinar

Lecture room - via ZOOM: https://cesnet.zoom.us/j/96221555849

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Gaël Bastien

Department of Condensed Matter Physics, Faculty of Mathematics and Physics, Charles University,
Ke Karlovu 5, 121 16 Prague 2, Czech republic

 

From triangular lattice antiferromagnet to frustrated lattice of magnetic and electric dipoles

Frustrated magnetism attracts much attention due to the competition between various magnetic states including the quantum spin liquid state, a disordered magnetic state with quantum entanglement. I will first discuss the physics of triangular lattice antiferromagnets with strong spin-orbit coupling based on recent and ongoing studies on KCeS2. Then I will introduce our project on the study of frustrated lattices of both electric and magnetic dipoles. Concretely we plan the single crystal growth and characterization by thermodynamic and microscopic measurements of the members of a family of such compounds: the hexaaluminates LnMgAl11O19 (Ce, Pr, Nd, Sm, Eu, Gd) and EuAl12O19 and hexagallates LnMgGa11O19 (Ce, Pr) and EuGa12O19. A particular attention will be given to the nature of the ground state of these compounds and to the coupling between the electric, magnetic and structural properties in these materials. This research is expected to lead to the discovery of new multiferroic phases and of new magnetoelectric glassy or quantum liquid phases.